81209390

素因数分解:

$2^1\times 5^1\times {\mathrm{359}}^1\times {\mathrm{22621}}^1$

素因数の和:22987

約数の個数: 16

約数和(自身を含む): 146590560

約数和(自身を除く): 65381170

約数列:

[1, 2, 5, 10, 359, 718, 1795, 3590, 22621, 45242, 113105, 226210, 8120939, 16241878, 40604695, 81209390]

約数ペア:

[(1, 81209390), (2, 40604695), (5, 16241878), (10, 8120939), (359, 226210), (718, 113105), (1795, 45242), (3590, 22621)]